package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传过来的明文密码进行md5加密
        password=DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {

            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }
    /*
    新增员工
     */
    //@Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
//      1.可以依次赋值  employee.setName(employeeDTO.getName());
//      2.对象属性复制
        BeanUtils.copyProperties(employeeDTO,employee);
//        设置账户的状态，默认正常状态，1表示正常状态2表示锁定

//        设置密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
//        当前记录的创建时间
        //employee.setCreateTime(LocalDateTime.now());
//        当前记录的更新时间
        //employee.setUpdateTime(LocalDateTime.now());
//        TODO 后期需要改为当前用户的id
//        当前记录的创建用户
        //employee.setCreateUser(BaseContext.getCurrentId());
//        当前记录的更新用户
        //employee.setUpdateUser(BaseContext.getCurrentId());
//        设置账号的状态，默认为正常状态，1表示正常状态，0表示锁定状态
        employee.setStatus(StatusConstant.ENABLE);

        employeeMapper.insert(employee);
    }
/*
分页查询
 */

    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee limit 0,10
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page <Employee>page =employeeMapper.pageQuery(employeePageQueryDTO);
        long total=page.getTotal();
        List<Employee> records=page.getResult();
        return new PageResult(total,records);
    }

    /*
    启用禁用员工账号
     */

    @Override
    public void startOrStop(Integer status, Long id) {
        //update employee set status = ? where id = ?
        /*  1.
        Employee employee=new Employee();
        employee.setStatus(status);
        employee.setId(id);*/
        /*  2.
         */
        Employee employee=Employee.builder()
                        .status(status)
                        .id(id)
                        .build();

        employeeMapper.update(employee);
    }

    /*
    根据id查询员工信息
     */

    @Override
    public Employee getById(Long id) {
        Employee employee=employeeMapper.getById(id);
        employee.setPassword("****");//此时查出来的密码是数据库的密码，为了防止用户看到，我们设置为****
        return employee;
    }

    /*
    编辑员工信息
     */


    public void update(EmployeeDTO employeeDTO) {
        //employee 对象和employeeDTO 不统一，需要先将employeeDTO转为employee对象，这里用对象拷贝
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //employee.setUpdateTime(LocalDateTime.now());//这两对象需要单独设置
        //employee.setUpdateUser(BaseContext.getCurrentId());//通过BaseContext.getCurrentId()获取当前的用户
        employeeMapper.update(employee);
    }
}
